peir addendum - barn elms - final

7/31/2019 PEIR Addendum - Barn Elms - Final

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Preliminary environmentalinformation report

Addendum to Volume 9: Barn Elms

Regulations 2 and 10 of the Infrastructure Planning

(Environmental Impact Assessment) Regulations 2009


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Volume 9: Barn Elms Addendum Page i

Thames Tunnel

Preliminary environmental information report

Volume 9: Barn Elms AddendumList of contents

Page number

1 Introduction ...................................................................................................... 12 Potential changes to the proposed development ......................................... 3

2.1 Introduction .............................................................................................. 32.2 Operation ................................................................................................. 32.3 Construction ............................................................................................ 3

3 Topics with effects unchanged from phase two ........................................... 6 3.1 Introduction .............................................................................................. 63.2 Ecology aquatic .................................................................................... 63.3 Land quality ............................................................................................. 63.4 Water resources groundwater .............................................................. 63.5 Water resources surface water ............................................................. 73.6 Water resources flood risk .................................................................... 7

4 Topics with materially different effects from phase two .............................. 94.1 Introduction .............................................................................................. 94.2 Air quality and odour ................................................................................ 94.3 Ecology terrestrial ............................................................................... 104.4 Historic environment .............................................................................. 114.5 Noise and vibration ................................................................................ 124.6 Socio-economics ................................................................................... 144.7 Townscape and visual ........................................................................... 164.8 Transport ............................................................................................... 18

Appendix A Plans of potential changes to the proposed development at BarnElms ................................................................................................................ 21

Appendix B Plans of the phase two proposed development at Barn Elms ....... 22Appendix C Noise and vibration supporting tables ............................................ 23Appendix D References ......................................................................................... 26


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Volume 9: Barn Elms Addendum Page ii

List of tables

Page number

Vol 9 Table C.1 Additional noise and vibration sensitive receptor locations, categoriesand their values/sensitivities .................................................................... 23Vol 9 Table C.2 Additional noise and vibration sensitive receptors and airborne

construction noise assessment categories .............................................. 23Vol 9 Table C.3 Noise and vibration summary of construction noise impacts and their

magnitudes during construction at receptor BE07, Boat House .............. 23Vol 9 Table C.4 Noise and vibration summary of construction noise impacts and their

magnitudes during construction at receptor BE08 3, 5 and 7 QueenElizabeth Walk ......................................................................................... 24

Vol 9 Table C.5 Summary of vibration impacts at buildings / structures and theirmagnitudes during construction at additional receptors ........................... 24

Vol 9 Table C.6 Summary of human response vibration impacts and their magnitudesduring construction at additional receptors .............................................. 25


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Volume 9: Barn Elms Addendum Section 1: Introduction Page 1

1 Introduction

1.1.1 The Preliminary Environmental Information Report(PEIR)1 relating to theThames Tunnel project was subject to phase two consultation from 4

November 2011 to 10 February 2012. The PEIRincluded a preliminaryassessment of the likely significant effects of the proposed development atBarn Elms, presented in Volume 9 of the PEIR.

1.1.2 Potential changes to the proposed development at Barn Elms are underconsideration in response to phase two consultation feedback. These arethe subject of targeted consultation and comprise:

a. The permanent access road to be routed to the north and east of thesite via Queen Elizabeth Walk.

b. The temporary construction access road to also be routed to the north

and east of the site via Queen Elizabeth Walk.c. The existing Barn Elms Schools Sports Centre changing room and

track and field facilities to be demolished to facilitate the routing of theaccess road. It is anticipated that alternative facilities would beprovided within the Barn Elms Schools Sports Centre grounds duringsite setup.

1.1.3 Plans showing the potential changes are provided in Appendix A.

1.1.4 This document forms an Addendumto Volume 9 of the PEIR. Thepurpose of this Addendumis to describe the potential changes at this sitewhich are being considered in response to comments received during

phase two consultation and to identify whether these have the potential togive rise to likely significant environmental effects not identified in theassessment presented at phase two consultation or which are materiallydifferent. This document does not repeat information from the earlierassessment where this is unchanged. This document should be read inconjunction with PEIRVolume 9 - Barn Elms.

1.1.5 Section 2 of this document describes the potential changes to theproposed development at Barn Elms. Section 3 deals with those topicswhere these changes are not anticipated to result in likely significantenvironmental effects not already identified or materially different from

those identified in the PEIRat phase two consultation. Section 4 containsan update to the preliminary assessment for environmental topics wherethe potential changes to the proposed development have the potential togenerate likely significant environmental effects which were not previouslyidentified in the PEIRor which are materially different to those identified inthe PEIRpublished at phase two consultation.

1.1.6 Once targeted consultation has been completed for this site and feedbackconsidered, the proposed application for a Development Consent Orderfor the project will be published in accordance with Section 48 of thePlanning Act 2008. The information published at that stage will include an

1Thames Tunnel. Preliminary Environmental Information Report(2011). Available at:

http://www.thamestunnelconsultation.co.uk/
http://www.thamestunnelconsultation.co.uk/http://www.thamestunnelconsultation.co.uk/http://www.thamestunnelconsultation.co.uk/


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Volume 9: Barn Elms Addendum Section 1: Introduction Page 2

Environmental Information Reportsetting out findings from theEnvironmental Impact Assessment (EIA). That document will notcomprise an Environmental Statementfor the purposes of the EIARegulations, and there is no requirement to provide an EnvironmentalStatementas part of the Section 48 publicity material. The environmental

information that is voluntarily to be published at that stage is intended toassist in a fuller understanding of the nature and location of the proposeddevelopment which Thames Water intends to seek development consentfor in due course, subject to considering responses received to the Section48 publicity. A full Environmental Statementwill be submitted with theDevelopment Consent Order application.


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Volume 9: Barn Elms Addendum Section 2: Potential changes tothe proposed development

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2 Potential changes to the proposeddevelopment

2.1 Introduction

2.1.1 This section identifies the potential changes to the proposed developmentat Barn Elms during operation and construction which have been triggeredby feedback from phase two consultation. Plans showing the potentialchanges are presented in Appendix A. Plans showing the schemepresented at phase two consultation are in Appendix B. These include theunchanged construction phase plans which provide context to the potentialchanges at these sites. The operational phase and the construction phaseare addressed in turn.

2.2 Operation

2.2.1 The proposed development at Barn Elms would remain as presented inthe PEIR, with the exception of the operational access. This would be viaa new permanent access road on the same alignment as the constructionaccess route along the northern and eastern perimeters of the Barn ElmsSchools Sports Centre. A more detailed description of the route iscontained within Section 2.3 of this Addendum. Vehicles would accessalong Queen Elizabeth Walk before passing through a narrow section ofprivate road which currently serves the playing fields.

2.2.2 At phase two consultation, the operational access was presented as via anew permanent access road between the existing Barn Elms Boat Houseaccess road, located to the north of the site, and Queen Elizabeth Walk.The operational access route followed a different alignment to theproposed construction access road presented at phase two and it wouldnot have required the demolition of any existing Barn Elms School SportsCentre facilities.

2.2.3 The width of the new route would be unchanged from the 3m presented inthe PEIR.

2.3 Construction

2.3.1 The construction of the proposed development at Barn Elms would remainas presented in the PEIR, including measures within the Code ofConstruction Practice (CoCP), with the exception of the following potentialchanges.

2.3.2 The construction site area, as defined by the limit of land to be acquired orused would be approximately 3ha, compared to approximately 2.5haproposed at phase two consultation.

2.3.3 Construction access to the site would comprise the formation of a new

access road across the northern and eastern parts of the Barn ElmsSchools Sports Centre. Vehicles would access the site along Queen


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Elizabeth Walk before passing through a section of private road whichcurrently serves the playing fields. Construction vehicles would thentransfer to a dedicated and segregated access route to enable transfer tothe construction site.

2.3.4 The proposed alignment of the access route would require the demolitionof the existing changing room facility and the relocation of some existingtrack and field facilities. Alternative changing room facilities would beprovided within the Barn Elms Schools Sports Centre grounds during sitesetup. The exact location of these are to be agreed with the sports centreowners, the London Borough of Wandsworth, should the potentialchanges proceed. It is considered likely that they would be re-provided inclose proximity to the existing facilities.

2.3.5 The use of Queen Elizabeth Walk would require temporarily moving thestop line and repositioning a traffic light column at the junction of QueenElizabeth Walk and Rocks Lane, with some associated parking

suspension on Rock Lane.

2.3.6 At phase two the construction access to the site was presented as via atemporary access road across the southern parts of Barn Elms SchoolsSports Centre and the Barn Elms Playing Fields. Access to the site wasvia the widening of an existing vehicle crossover located off Rocks Lane.The use of this access required the relocation of an existing bus stop andremoval of a section of on-street parking on Rocks Lane opposite the siteaccess to provide adequate carriageway width to allow constructionvehicles to turn into and out of the site.

2.3.7 The construction route proposed at phase two proposed the demolition of

a sports pavilion facility located along the southern perimeter of the BarnElms Playing Fields. This facility would be unaffected by the revisedaccess route.

2.3.8 The proposed tree removal and pruning of the trees adjacent to thevehicle cross-over off Rocks Lane, required for the construction access,would not be necessary as part of the revised access proposals. Twotrees would still require removal and others would require pruning inadvance of the works, albeit in different locations and of less mature treespecimens.

2.3.9 The width of the revised construction route would be unchanged from the

5m presented in the PEIRalthough the exact route remains to be finalised.

2.3.10 As reported in the PEIR, construction vehicle access between theTransport for London Road Network (TLRN) (Lower Richmond Road) andthe site would still be from the south via Rocks Lane.

2.3.11 For the purposes of this report, as stated in the PEIR, one vehiclemovement is defined as a single vehicle accessing or egressing the site.Total lorry movements over the entire construction period would increasefrom approximately 2900 to 3300. This increase is associated with thedemolition and construction of the changing room and track and fieldfacilities. The peak daily vehicle movements, averaged over a one month

period, would be approximately 22 movements a day (compared to 20reported in the PEIR). This lorry peak would be during the demolition of


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the existing changing room facility and the formation of the access road, aperiod of approximately two months. This level of vehicle movementswould not be for the full duration of the construction period.

2.3.12 Upon completion of the works the width of the construction access roadwould be reduced from 5m to 3m and the area not required for operationalaccess would be reinstated.


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Volume 9: Barn Elms Addendum Section 3: Topics with effectsunchanged from phase two

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3 Topics with effects unchanged from phasetwo

3.1 Introduction3.1.1 This section presents an update to the PEIRas it relates to Barn Elms,

taking account of the potential changes to the proposed development,which are being considered in response to comments made during phasetwo consultation. It addresses those topics where the potential changesunder consideration are not likely to give rise to likely significant effectsthat are materially different compared to those presented in the PEIRpublished at phase two consultation.

3.2 Ecology aquatic

3.2.1 The phase two assessment for aquatic ecology can be found in Section 5of Volume 9 of the PEIR.

3.2.2 No effects were identified on aquatic ecology during the constructionphase in the PEIR. This conclusion would not be altered by the potentialchange to the alignment of the construction access road because therevised access alignment does not affect the Beverley Brook and RiverThames.

3.2.3 The beneficial effects on all aquatic ecology receptors during operationwould not change.

3.2.4 It is therefore considered that the potential changes to the proposeddevelopment would not result in material changes to the phase twoaquatic ecology assessment during construction or operation.

3.3 Land quality

3.3.1 The phase two assessment for land quality can be found in Section 8 ofVolume 9 of the PEIR.

3.3.2 Potential changes to the proposed development would not lead to theinclusion of any known contaminative land uses within the site boundary,as indicated by the baseline described within a 250m study area in thePEIR. Similarly the change to the alignment of the construction andpermanent access road would not introduce any additional potentialreceptors that could be affected by the proposed development.

3.3.3 It is therefore considered that the potential changes to the proposeddevelopment would not result in material changes to the phase two landquality assessment during construction or operation.

3.4 Water resources groundwater

3.4.1 The phase two assessment for groundwater can be found in Section 13 ofVolume 9 of the PEIR.


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3.4.2 There are no proposed changes to the development of relevance togroundwater because the below ground structures which could affectgroundwater flows, remain as presented in the PEIR. The negligibleeffects on groundwater predicted in the PEIRremain the same.

3.4.3 It is therefore considered that the potential changes to the proposeddevelopment would not result in material changes to the phase twogroundwater assessment during construction or operation.

3.5 Water resources surface water

3.5.1 The phase two assessment for surface water can be found in Section 14of Volume 9 of the PEIR.

3.5.2 There are no proposed changes to the development of relevance tosurface water on the basis that the primary construction site location andactivities remain the same.

3.5.3 The new alignment of the construction access road is in closer proximity tothe London Wetlands Centre SSSI (approximately 5m to the north of theaccess road). However it is considered that with the proposed drainagemanagement the pollution pathways can be managed sufficiently toreduce the pollution risk to negligible.

3.5.4 In terms of the operational assessment, the beneficial effects on waterquality would not change.

3.5.5 It is therefore considered that the potential changes to the proposeddevelopment would not result in material changes to the phase two

surface water assessment during construction or operation.

3.6 Water resources flood risk

3.6.1 The phase two, Level 1 Flood Risk Assessment can be found in Section15 of Volume 9 of the PEIR.

3.6.2 The potential alignment of the temporary and permanent access roads lieswithin the area identified as less susceptible to surface water flooding inthe London Borough of Richmond upon Thames Level 1 Strategic FloodRisk Assessment. Therefore the flood risk to the site from land andsurface water run-off would remain low. The assessment of preliminaryeffects, presented in the PEIR, of flood risk from the site from land andsurface water run-off only considered the area of the main constructionsite and permanent operational area. It did not include the area of thetemporary or permanent access road therefore the assessment remainsas presented in the PEIRbecause the only change from the phase twoproposals is the alignment of the access road.

3.6.3 The potential change to the alignment of the construction and permanentaccess road does not affect the level of risk associated with other forms offlooding as it does not propose changes to the flood defences or includesignificant ground works therefore flood risk identified from other sources

such as tidal and groundwater would remain as identified in the PEIR. The


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risk of flooding from all other sources therefore remains as reported in thePEIR.

3.6.4 It is therefore considered that the potential changes to the proposeddevelopment would not result in significant changes to the phase two floodrisk assessment during construction or operation.


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Volume 9: Barn Elms Addendum Section 4: Topics with materiallydifferent effects from phase two

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4 Topics with materially different effects fromphase two

4.1 Introduction4.1.1 This section presents an update to the PEIRas it relates to Barn Elms,

taking account of the potential changes to the proposed developmentwhich are being considered in response to comments made during phasetwo consultation. It addresses those topics where the changes underconsideration have the potential to give rise to materially different effectscompared to those presented in the PEIRpublished at phase twoconsultation.

4.2 Air quality and odour

4.2.1 The phase two assessment for air quality and odour can be found inSection 4 of Volume 9 of the PEIR.

4.2.2 The potential changes to the alignment of the construction access roadintroduce new receptors for the air quality construction assessment, atNos. 3, 5 and 7 Queen Elizabeth Walk and residential receptors at thejunction of Queen Elizabeth Walk and Rocks Lane. It also increases theproximity of existing receptors, namely the London Wetlands Centre SSSIand the Barn Elms Schools Sports Centre, all of which would beapproximately 5m from the site boundary of the access road, compared to

within 150m and 70m respectively in the phase two proposals. Theresidential receptors on Rocks Lane adjacent to the phase twoconstruction access point would no longer be significantly affected by theproposals. All other receptors remain as reported in the PEIR. Thepotential change to the construction access road would also require thedemolition of the northern existing changing room facility and relocation ofthe track and field facilities in the northeast of the Barn Elms SchoolsSports Centre.

4.2.3 Based on professional judgement it is considered that impacts fromconstruction road traffic emissions would remain small, as reported in thePEIR. Although new receptors would be introduced (Nos. 3, 5 and 7Queen Elizabeth Walk and at the junction of Rocks Lane and QueenElizabeth Walk), it is considered that the local air quality effect ofconstruction on residential properties would remain a minor adverse effectas reported in the PEIR. Given the high sensitivity of the LondonWetlands Centre SSSI, it is anticipated that the increased proximity of thisreceptor to the construction access road would increase local air qualityeffects from road traffic emissions. However, based on professionaljudgement, considering the number of HGVs using the access road, theeffect would remain minor adverse as reported in the PEIR.

4.2.4 A qualitative assessment of construction dust impacts has been

undertaken. The demolition of the existing structures has the potential toelevate construction dust levels. The construction of the new access road


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and movement of construction vehicles would also be likely to increasedust emissions in this area. Given the proximity of the Barn Elms SchoolsSports Centre and the London Wetlands Centre to these activities it isconsidered that the construction dust effects on these receptors would beelevated from negligible to minor adverse although remain as not

significant. The additional Queen Elizabeth Walk residential receptorswould also experience minor adverse effects as a result of the emissionsfrom the construction road traffic. The overall construction dust effect onresidential properties would remain a minor adverse effect as reported inthe PEIR.

4.2.5 As stated in para 4.7.1 of PEIRVolume 9, the control measures outlined inthe Code of Construction PracticePart A would be adhered to and nomitigation measures are required for air quality.

4.2.6 All other construction phase effects remain as reported in the PEIR. Interms of the operational phase, there would be no change to the negligible

odour effects identified in the PEIRbecause the permanent structures andtheir location remain the same.

4.2.7 It is therefore considered that the potential changes to the proposeddevelopment, which would introduce new receptors and result in elevatedconstruction dust effects at the Barn Elms Schools Sports Centre and theLondon Wetlands Centre, would result in material changes to the phasetwo air quality assessment during construction although the effects wouldremain not significant.

4.3 Ecology terrestrial

4.3.1 The phase two assessment for terrestrial ecology can be found in Section6 of Volume 9 of the PEIR.

4.3.2 The potential change to the alignment of the access road would reduceimpacts on the Barn Elms Playing Field site of importance for natureconservation (SINC), as the designated site would no longer be traversedby the construction access road. The new alignment of the constructionaccess route would instead comprise amenity grassland andhardstanding. Removal and pruning of trees would still be required alongthe alignment of the construction access road, albeit in a different locationgiven the new alignment. Under the phase two proposals, mature treeswould have been removed and pruned near the Beverley Brook andhighway access point on Rocks Lane. Under the revised proposals, fewermature trees would be removed near the Beverley Brook by the mainconstruction site and along the northern and eastern perimeters of theBarn Elms Schools Sports Centre. The new alignment to the north andeast of the sports centre would place passing construction traffic in closerproximity to the London Wetlands Centre SSSI as it lies approximately 5mfrom the site boundary of the access road. It remains 600m to thenorthwest of the main construction works.

4.3.3 It is considered that there would be no impact and therefore no significant

effects on the Barn Elms Playing Field SINC because there would be noloss of habitat and as the site is designated for its grassland interest no


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4.4.5 Medieval and post-medieval remains of landscaping and fishpondsassociated with the Barn Elms manor house (Historic environment assets[HEA] 1B, 1C, 1D, 1E, 1F and 1G2) would no longer lie within the siteboundary. There would therefore be no effects on them as a result of thepotential changes.

4.4.6 The potential change to the alignment of the access road would reducethe total area of ground disturbance from preliminary soil stripping. Thisalignment and reduced area would reduce the likelihood of encounteringpossible, previously unrecorded, archaeological remains (low to high assetsignificance), although the potential for encountering such remains wouldremain low, as stated in the PEIR. Thus the effect would remain unknown(of minor to major adverse significance), as per para. 7.5.5.i of PEIRVolume 9.

4.4.7 Similarly, there is potential for a reduced impact upon prehistoricsettlement remains (high potential), in terms of the total area of proposed

impact, although the environmental effect on this asset would remainmajor adverse, as stated in para 7.5.5.c of Volume 9 of the PEIR.

4.4.8 Two additional potential post-medieval assets would fall within the revisedsite boundary. There is a high potential for possible surviving buriedremains of 19th century water management, in the form of flood gates (lowasset significance) located on the proposed access road where it turnswestwards away from the river, and for footings of early 20th centurystables/outbuildings (low asset significance) located along the proposedaccess route, just east of the existing changing rooms. The potential forpost-medieval remains is therefore high (rather than moderate to high as

stated in para 7.5.5 of Volume 9 of the PEIR). Soil stripping and gradingfor construction of the access road would reduce the heritage significanceof these assets from low to negligible, resulting in two minor adverseeffects, additional to those reported in the PEIR.

4.4.9 The potential for other heritage assets identified in the PEIR, such as latermedieval flood defences and post-medieval pump houses and tanks,would remain as stated in the PEIR. Thus all other effects would remain asreported in the PEIR.

4.4.10 As reported in the PEIR, the assessment of effects on the setting ofheritage assets will be presented in the Environmental Statementas

appropriate.4.4.11 It is therefore considered that the potential changes to the proposed

development, arising from the effects on two additional potential post-medieval assets, would result in material changes to the phase twohistoric environment assessment during construction.

4.5 Noise and vibration

4.5.1 The phase two assessment for noise and vibration can be found in Section9 of Volume 9 of the PEIR.

2As shown on PEIR Vol 9 Fig 7.4.1 and listed in Vol 9 Appendix A.3 Gazetteer of known heritage assets


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4.5.2 The potential change to the alignment of the construction access roadintroduces new receptors for the noise and vibration assessment, at 3, 5and 7 Queen Elizabeth Walk, mixed use properties at the junction ofRocks Lane and Queen Elizabeth Walk and the Barn Elms Boat House,which would both be within 5m of the site boundary. The potential route

of the construction access road would also require the demolition of theexisting changing room and track and field facilities in the northeast of theBarn Elms Schools Sports Centre. Information on these additional noiseand vibration sensitive receptors are given in Appendix C, Table C.1 andTable C.2.

4.5.3 The highway works at the corner of Rocks Lane and Queen ElizabethWalk are short duration daytime works and whilst not quantitativelyassessed, considering the duration it is unlikely that significant effectswould arise from these activities at any of the receptors. Thus, theproperties on the junction of Rocks Lane and Queen Elizabeth Walk are

only qualitatively assessed for effects from construction traffic.4.5.4 The following paragraphs present the quantitative assessment of the main

construction activities for the Boat House and residential properties onQueen Elizabeth Walk.

4.5.5 The Boat House is considered as a recreational resource. It is a twostorey building. A summary of construction noise impacts and theirmagnitudes, including on-site vehicle movements, from constructionactivities is presented in Appendix C, Table C.3. Given the mediumsensitivity and recreational use of the facility, the construction noise levelabove the assumed ambient noise level is such that it is considered that

there would not be a significant noise effect on this receptor.4.5.6 Nos. 3, 5 and 7 Queen Elizabeth Walk are residential dwellings located

close to the temporary access road. A summary of construction noiseimpacts and their magnitudes, including on-site vehicle movements, fromconstruction activities is presented in Appendix C, Table C.4. Theconstruction noise levels predicted at this site are below the potentialsignificance criterion for this residence, so it is considered that there wouldnot be a significant noise effect on this receptor.

4.5.7 A qualitative assessment of construction traffic (movements from outsidethe site boundary) has been undertaken for the Rocks Lane and Queen

Elizabeth Walk properties. This assessment indicates that a significanteffect is unlikely from this noise source to the Rocks Lane properties,owing to the relatively high levels of existing traffic on Rocks Lane.Properties on Queen Elizabeth Walk experience much lower levels ofexisting traffic than Rock Lane. However, based on the parking facilities atthe London Wetlands Centre and Barn Elms Playing Fields and SchoolsSports Centre, the existing levels of traffic associated with these facilitiesare likely to be such that the additional numbers of vehicle movements areunlikely to result in a significant effect.

4.5.8 Potential construction vibration impacts on adjacent buildings / structuresand humans have been assessed for the Queen Elizabeth Walkresidential receptors and the Barn Elms Boat House (see Appendix C,Table C.5 and Table C.6). No impacts have been identified on either of


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the additional receptors, therefore no significant vibration effects areanticipated.

4.5.9 The assessment of potential construction vibration impacts (see AppendixC, Table C.6) has not identified any impacts on the Queen Elizabeth Walkresidential receptor or the Barn Elms Boat House therefore no significantvibration effects are anticipated.

4.5.10 The approach to mitigation for significant noise and vibration effects wouldbe the same as that reported in the PEIR.

4.5.11 All other construction and operational effects remain as reported in thePEIR. There would be no operational effects at the additional receptorsbecause as reported in the PEIRno operational effects have beenidentified from the operation of the tunnel and maintenance activities,therefore there would be no effects on the additional receptors.

4.5.12 Overall, whilst new receptors have been introduced in the assessment as

a result of the potential changes to the proposed development, itself amaterial issue, it is considered that the effects on these new receptorswould not be significant.

4.6 Socio-economics

4.6.1 The phase two assessment for socio-economics can be found in Section10 of Volume 9 of the PEIR.

4.6.2 The potential change to the alignment of the construction access road tothe north and east of the Barn Elms Schools Sports Centre and associated

demolition of facilities could affect users of the site and surrounding areaand has the potential to affect amenity due to dust, emissions, noise,vibration and visual effects, different to that set out in the PEIR. Similarlythe potential location of the permanent access road along this alignment isrelevant to the operational assessment of visual effects. However, itshould be noted that the majority of effects would be associated with theconstruction works site and permanent operational area, which remain thesame.

4.6.3 The potential change to the alignment of the construction access roadintroduces new residential receptors (at Nos. 3, 5 and 7 Queen ElizabethWalk and at the junction of Queen Elizabeth Walk and Rocks Lane). It

also introduces new recreational receptors at the Barn Elms Boat House.The potential change introduces the London Wetlands Centre as a newreceptor and increases the proximity of an existing receptor, namely theBarn Elms Schools Sports Centre. All of these receptors would be within5m of the access road site boundary.

4.6.4 Socio-economic effects resulting from potential changes to the proposeddevelopment have been assessed through qualitative assessment basedon professional judgement.

4.6.5 There would be temporary land take of open space during the constructionphase, however, the potential alignment of the construction access roadwould not affect playing pitch capacity. The provision of alternativechanging room and track and field facilities in advance of those that would


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be demolished, would result in no change to users as there would becontinuity of provision. Therefore the magnitude of impact would benegligible and, given the medium sensitivity of the receptor, the effect fromtemporary land take and demolition/provision of alternative facilities onusers of the Barn Elms Schools Sports Centre would be negligible.

4.6.6 Amenity effects on users of open space, resulting from noise, vibration, airquality and visual effects would remain as predicted in para. 10.5.18 to10.5.26 of Volume 9 of the PEIRassessment, with overall minor adverseeffects. The construction dust effects would be elevated at the Barn ElmsSchools Sports Centre but would still not be considered significant. Giventhat the Centre is not identified as a noise or vibration receptor, that thevisual impact assessment remains unchanged in relation to the Barn ElmsSchool Sports Centre, and the type of recreational activities that the sportscentre is used for, it is considered that this would not prevent the ongoinguse of the sports centre for games or elevate the overall significance of the

effect.4.6.7 Amenity effects on residents, resulting from noise, air quality and visual

effects would remain as predicted in para. 10.5.27 to 10.5.35 of Volume 9of the PEIRassessment with overall minor adverse effects. This is on thebasis that, although there would be additional residential receptorsassessed for noise, air quality and dust, these receptors would notexperience significant noise, air quality or dust effects. On this basis, thiswould mean that there would be no change in the overall experience ofamenity by nearby residential receptors from the minor adverse effect setout in the PEIR.

4.6.8 Amenity effects on users of the Thames Path would remain as predicted inpara. 10.5.44 to 10.5.52 of Volume 9 of the PEIRassessment, withnegligible overall amenity effects for users. This is on the basis that thereis a reduced visual effect and that the Thames Path has not beenidentified as an air quality, construction dust, noise or vibration receptor.This would mean that users of the Thames Path would not experience anysignificant effects of the type that could cause an overall reduction inamenity.

4.6.9 Amenity effects on users of Beverley Brook footpath, resulting from visualeffects, would reduce from the minor adverse effect predicted in para.10.5.36 to 10.5.43 of Volume 9 of the PEIRassessment to a negligible

overall amenity effect. This is on the basis that the potential change to thealignment of the access route would also mean that users of BeverleyBrook footpath would be less exposed to impacts along that path.

4.6.10 The potential change to the alignment of the construction access routewould introduce the Barn Elms Boat House as new receptors. Therewould be potential for users to experience a reduction in amenity.However, no significant air quality, construction dust or noise and vibrationeffects have been identified. Further the receptor is not identified as avisual receptor. Thus, it is considered that users would experience anegligible overall amenity effect as a result of the potential changes.

4.6.11 The potential change to the alignment of the construction access routeand its proximity to the London Wetlands Centre would introduce it as a


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new socio-economic receptor with respect to the potential for amenity-related effects to disrupt and potentially deter people from visiting thecentre. It is considered as a recreational facility and tourism asset and thecentre would have medium sensitivity to such effects. Minor adverse airquality and construction dust effects have been identified although the

centre has not been identified as a receptor for noise and vibration orvisual effects. Thus the overall amenity impact would be low and theeffect on the centre would be minor adverse and therefore not significant.

4.6.12 All other construction phase effects would remain as presented in thePEIR, and is it not considered that the proposed works would introduceany new receptors.

4.6.13 It is therefore considered that the potential changes to the proposeddevelopment, which would introduce new receptors, give rise to decreasedeffects on the Beverley Brook footpath and new effects on the LondonWetland Centre, would result in material changes to the phase two socio-

economic assessment during construction although the effects would benot significant.

4.7 Townscape and visual

4.7.1 The phase two assessment for townscape and visual can be found inSection 11 of Volume 9 of the PEIR.

4.7.2 The baseline and receptors would remain as reported in the PEIR.

4.7.3 Effects resulting from changes in the proposed development have beenassessed qualitatively based on professional judgement, in line with the

PEIR.

4.7.4 During construction, the majority of the sites townscape componentsdescribed in the PEIRwould be unaffected by the potential change to theconstruction access road. Although the demolition of the changing roomfacilities would provide an additional effect, the intensity of constructionactivity at the main site would remain unchanged. This would mean thattownscape effects on the site would remain of major adverse significance.

4.7.5 Effects on the majority of townscape character areas during constructionwould remain as reported in the PEIR, with the exception of the followingwhich would experience reduced effects:

a. Castelnau Residential, which would still experience no effects due tothe alternative construction access route (assessed as minor adversein para. 11.5.7 of the PEIRVolume 9).

b. Leaders Gardens, which would still experience effects from thepresence of construction activity and cranes but not constructiontraffic. The effect is considered to be minor adverse due to the settingof the area being affected to a limited extent by these activities(assessed as moderate adverse in para. 11.5.44 of the PEIRVolume9).

c. Barnes Common, which would experience effects from the presenceof construction activity but not construction traffic. The effect is


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Page 17

considered to be minor adverse due to part of the setting of this areabeing affected to a limited extent by construction activity (assessed asmoderate adverse in para. 11.5.47 of the PEIRVolume 9).

4.7.6 Effects on the majority of viewpoints during construction would remain asreported in the PEIR, with the exception of:

a. Viewpoint 1.4: Panoramic view northwest to northeast from residencesalong Horne Way views would still be affected by site hoardings,construction activity and construction plant within the site but no longerby traffic along the haul road. However, the finding of the assessment(moderate adverse) would remain unchanged as the proposedconstruction activity would still result in a noticeable deterioration inthe view (see para. 11.5.57 of PEIRVolume 9).

b. Viewpoint 2.9: View northwest from Leaders Gardens receptors atthis viewpoint would still experience effects from site hoardings andconstruction plant at the site but no longer from the wider presence ofsite hoardings along the construction access assessed in the PEIR.The effect is considered to be of a reduced minor adverse significance(assessed as moderate adverse in para. 11.5.75 in PEIRVolume 9).

c. Viewpoint 2.10: View southwest from Embankment at Beverley Brook -receptors at this viewpoint would still experience effects from sitehoardings and construction plant at the site but no longer from thewider presence of site hoardings along the construction accessassessed in the PEIR. The effect is considered to be of a reducedminor adverse significance (assessed as moderate adverse in para.11.5.77 in PEIRVolume 9).

d. Viewpoint 2.11: View northeast from Barnes Common receptors atthis viewpoint would experience reduced negligible effects due to theintermittent visibility of cranes (assessed as minor adverse in para.11.5.79 in PEIRVolume 9).

e. Viewpoint 2.12: View east from the Beverley Brook footpath, close tothe running track - receptors at this viewpoint would experiencereduced negligible effects due to the intermittent visibility of cranes(assessed as moderate adverse in para. 11.5.81 in PEIRVolume 9).

4.7.7 No new mitigation is required for the reduced effects arising from the

potential change to the construction access road.4.7.8 Operational phase effects would remain as reported in the PEIRbecause

the limited change to the northern extent of the access road does notmaterially alter the proposed development originally assessed fortownscape and visual assessment.

4.7.9 It is therefore considered that the potential changes to the proposeddevelopment, arising from the decreased effects on a number oftownscape character areas and viewpoints, would result in materialchanges to the phase two townscape and visual assessment duringconstruction.


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4.8 Transport

4.8.1 The phase two assessment for transport can be found in Section 12 ofVolume 9 of the PEIR.

4.8.2 The potential change to the alignment of both the construction andpermanent access road is of relevance to the transport assessment.

4.8.3 The potential access changes described in Section 2 of this Addendumwould result in increased vehicle flow along Queen Elizabeth Walk.Access to the site from the TLRN for construction vehicles would still befrom the south via Rocks Lane, albeit from a different entry point. Thisproposed entry point would require measures (para. 2.3.5) at the QueenElizabeth Walk and Rock Lane junction to enable Heavy Goods Vehicles(HGVs) to negotiate the junction.

4.8.4 The transport baseline and receptors would remain as reported in the

PEIR.4.8.5 Effects resulting from the potential changes in the proposed development

have been assessed qualitatively based on professional judgement, in linewith the approach adopted in the PEIR.

4.8.6 Construction vehicles would access Queen Elizabeth Walk via an existingsignalised junction. There would be no other alterations to pedestrianroutes, cycle routes and bus stops.

4.8.7 Although there would be increased traffic flow along Queen ElizabethWalk, and therefore increased severance for pedestrians crossing QueenElizabeth Walk, the low number and frequency of construction vehicles

would mean that there would remain a moderate adverse effect onpedestrians and a negligible effect on cyclists during construction.

4.8.8 With regard to bus users and operators, there is the potential for conflictwith bus route 283 which serves the London Wetlands Centre between thejunction with Rocks Lane and the London Wetlands Centre. Given thevolume of construction traffic movements, however, it is considered thatthis would have a negligible effect on buses. The PEIR(see para. 12.5.49of PEIRVolume 9) had identified a minor adverse effect resulting from therelocation of an existing bus stop; however with the new alignment thisrelocation would not be required.

4.8.9 Further conflicts between large construction vehicles and large vehicles,such as coaches, accessing the sports centre car park could occur alongQueen Elizabeth Walk. The low volume of construction vehiclemovements would have a negligible effect on road users on QueenElizabeth Walk.

4.8.10 Overall, the movement of HGVs, the changes to the highway layoutoutlined and potential delays to journey times from increased vehiclemovement would have a minor adverse effect on all road users. This isreduced from moderate adverse reported in the PEIRwhere the vehicularaccess off Rocks Lane was expected to result in a greater adverse effect

due to construction vehicles needing to undertake an uncontrolled right-turn into the playing fields.


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4.8.11 The measures at the junction with Rocks Lane and Queen Elizabeth Walkmay require the suspension of some parking on Rocks Lane on approachto the junction from the south in order for the stop line to be relocatedsouth to allow large vehicles to undertake the left-turn out of QueenElizabeth Walk. If required this suspension of parking would have a minor

adverse effect on parking during construction. There would be no othereffects on parking.

4.8.12 There would be no effects other than those already mentioned onpedestrians, cyclists, bus users and operators, parking and all road usersduring the construction phase.

4.8.13 The effects identified on pedestrians and cyclists could be mitigatedthrough the creation of passing points for vehicles on the western end ofQueen Elizabeth Walk and signal optimisation at the Rocks Lane andQueen Elizabeth Walk junction could also be used to minimise effects onroad users. Other mitigation measures would be the same as set out in

the PEIR.4.8.14 The negligible operational phase effects remain as reported in the PEIR

because the limited potential change to the northern extent of the accessroad alignment does not materially alter the proposed developmentoriginally assessed in the transport assessment. However, the revisedrouting (along the northern and eastern sections of the sports centre,rather than along the existing access to the Boat House / Sailing Clubfacilities) is considered improved because it further reduces theopportunity for vehicle and pedestrian conflicts.

4.8.15 It is therefore considered that the potential changes to the proposed

development, arising from the decreased effects on buses and all roadusers, would result in material changes to the phase two transportassessment during construction.


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Volume 9: Barn Elms Addendum Appendices Page 20

Appendices


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Volume 9: Barn Elms Addendum Appendix A: Plans of potentialchanges to the proposed

development

Page 21

Appendix A Plans of potential changes to theproposed development at Barn Elms

Please see individual A3 drawings as follows:

A.1 Barn Elms - Targeted Consultation - Demolition and Site Clearance Plan -Sheet 1 - 110-DA-CVL-PRD2X-000748




A.5 Barn Elms - Permanent works - sheet 1 - 110-DA-CVL-PRD2X-000752


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Volume 9: Barn Elms Addendum Appendix B: Plans of the phasetwo proposed development

Page 22

Appendix B Plans of the phase two proposeddevelopment at Barn Elms

Please see individual A3 drawings as follows:

B.1 Barn Elms - Demolition and Site Clearance Plan - Sheet 1 - 110-DA-CVL-PRD2X-000211



B.4 Barn Elms - construction - phase 1 - 110-DA-CNS-PRD2X-000214

B.5 Barn Elms - construction - phase 2 - 110-DA-CNS-PRD2X-000215

B.6 Barn Elms - Permanent works - sheet 1 - 110-DA-CVL-PRD2X-000216

B.7 Barn Elms - Permanent works - sheet 2 - 110-DA-CVL-PRD2X-000217


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Volume 9: Barn Elms Addendum Appendix C: Noise and vibrationsupporting tables

Page 23

Appendix C Noise and vibration supporting tables

Vol 9 Table C.1 Additional noise and vibration sensitive receptorlocations, categories and their values/sensitivities

Ref Receptor addresses Building use Sensitivity No. of noisesensitive

properties/areas

BE07 Barn Elms Boat House Recreation Medium 1

BE08 Nos 3, 5 & 7 QueenElizabeth Walk

Residential High 3

Vol 9 Table C.2 Additional noise and vibration sensitive receptors

and airborne construction noise assessment categories

Ref Noise sensitivereceptor

Ambientnoise level,rounded to

nearest5dBLAeq

2

Assessmentcategory1

Significancecriterion

threshold level1

Day,dBLAeq,

10hour

Night,dBLAeq

1hour

BE07 Boat House - n/a n/a n/a

BE08 Nos 3, 5 & 7 QueenElizabeth Walk - A 65 451From ABC method BS5228:2009 Code of practice for noise and vibration control on

construction and open sites2Baseline measurement data not available for this report

Vol 9 Table C.3 Noise and vibration summary of construction noiseimpacts and their magnitudes during construction at receptor BE07,

Boat House

Receptor No. of noise

sensitiveproperties

Value/ sensitivity

Boat House 1 Medium

Activity Constructionnoise level1,

dBLAeq

Assumed

ambient2baselinedBLAeq

Magnitude/ justification

ConstructionAccessRoad

60


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2Assumed ambient level from Defra Noise Maps for London

Vol 9 Table C.4 Noise and vibration summary of construction noiseimpacts and their magnitudes during construction at receptor BE08

3, 5 and 7 Queen Elizabeth Walk

Receptor No. of noisesensitive

properties

Value/sensitivity

Nos. 3, 5 and 7 Queen Elizabeth Walk 3 High

Activity Construction Noise

level1,

dBLAeq

Significancecriterion

threshold level,dBLAeq

Magnitude/justification

Excessabovecriterion

, dBLAeq

Approx.activityduration,

months

Ground and upper floor

TemporaryAccess Road

62 65 -3 3

1Construction noise only

2Worst case floors assessed not necessarily the highest floor level.

Vol 9 Table C.5 Summary of vibration impacts at buildings /structures and their magnitudes during construction at additional

receptors

Ref Receptor Impact(highest

predicted PPVacross allactivities,

mm/s)

Value/sensitivity

Magnitude andjustification

BE07 Boat House


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Vol 9 Table C.6 Summary of human response vibration impacts andtheir magnitudes during construction at additional receptors

Ref Receptor Impact(highest

predicted VDVacross allactivities,

m/s1.75)

Value/sensitivity

Magnitude andjustification

BE07 Boat House


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Volume 9: Barn Elms Addendum References Page 26

Appendix D References

BS5228:2009 Code of practice for noise and vibration control on construction and

open sites


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June 2012

110-RG-ENV-PRD2X-000771

For further information see our website:

peir addendum - barn elms - final

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